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NOKIAN TYRES: New Ice Driving World Record
Monday 05 March 2007 08:01 EET Kauppalehti Online
New Ice Driving World Record: 321 km/h
Nokian Hakkapeliitta studded winter tyres ensured grip in speedy driving
A new world record speed for driving on ice was achieved when four-times world rally champion Juha Kankkunen reached a speed of 321 km/h on a track ploughed on the ice of the Gulf of Bothnia next to the city of Oulu. Nokian Hakkapeliitta studded winter tyres ensured a firm grip.
The Guinness Book of World Records defined strict rules for this world record attempt: the speed was measured over a distance of one kilometre in both directions within one hour; the measuring point was in the middle of a straight part of the track; the ice had to be natural - it could not be roughed up or treated with any chemicals; and the tyres had to be approved for road traffic in the country in which the record attempt took place.
The significance of tyres is stressed under extreme speeds as the tyres are the vehicle's only point of contact with the substrate. The Bentley Continental GT used for the record attempt was equipped with Nokian Hakkapeliitta Sport Utility 5 studded winter tyres. The tyres have been designed and developed for city SUVs.
When driving on slippery ice at a very high speed, the tyres need to have a good grip, great durability and driving qualities to match the performance. At these speeds, the tyres and studs have to endure exceptionally demanding conditions. The acceleration formula is demanding: when a vehicle moves at a speed of 320 km/h, a stud weighing one gram creates a pulling force equivalent to approximately 2.2 kg. The vehicle covers 90 metres in one second, and each stud hits the ice more than 40 times a second.
"In order to achieve a steady driving speed of 320 km/h, you need gravity of approximately 300 kg or 3,000 N. For the vehicle to accelerate, you need even more force. The tyres must be able to transfer this force into the ice, or the tyre will slip and the vehicle will not accelerate as hoped," explains Nokian Tyres Development Manager Kai Hauvala.
As the air resistance increases, more traction is needed in order to pick up speed. The tyres are under immense pressure at these high speeds, and their diameter can increase by 15-20 mm.
The Nokian Hakkapeliitta tyres with their sturdy frame did very well in this demanding wear test: the tyres' grip was as good as hoped for and none of the studs came off.
For further information, please contact: Nokian Tyres plc
- Marketing Manager Antti-Jussi T�htinen, tel. +358 3 340 7940
- Development Manager Kai Hauvala, tel. +358 3 340 7673
costco seems to be sold out of everything
any1 can reccomend more places around the GTA?
| quote: |
| Originally posted by Engine9 any1 can reccomend more places around the GTA? |
i wish i could ever even think of getting winter tires. can't even afford a oil change half the time.
plus i dunno what winter tires would do in this situation. probably not make too much of a difference.
| quote: |
| Originally posted by Engine9 costco seems to be sold out of everything any1 can reccomend more places around the GTA? |
thanks guys
looks like kipling tire it is
Last time I was there... Canadian Tire had a sale on fresh steelies... something like $50/$60 each... not too much in the end... . about $220 or so I guess.... worth the safe driving with better tires.
Fact is they will save the alloys/rims you run during the summer.
It's a good idea to get narrower tires for winter cuz they cut through heavy snow easier. As well as what's already been mentionned: larger tire profile with smaller steelies.
All-season tires are good just for rainy conditions in the summer cuz they balance out wet/dry driving.... they really suck in the winter... I know this now... my tires are shyt in all this heavy snow. Got stuck 3 times last night already.
Gislaved NF5 are an amazing tire! Volvo dealers only use Gislaved. They are cheaper than Nokian and perform just as well!
Also make sure you are buying the tire that is best suited for your environment. If you live in the city, where snow removal is constant you dont need the same tires as in rural areas.
There are strictly dedicated winter tires and then there are more of winter/all season tire which are less aggressive and better suited for highway driving.
It is also a good idea to get a narrower tire for the winter, do decrease the contact patch with the ground. This way the tire sinks into the snow, instead of floating on it. So for example, if your stock tire size is 205/60/R15, you go with 185/65/R15. Just make sure to calculate the diameters of both tires, not to affect the speedometer too much. You can do this online (tire calculators).
Check out http://www.canadiandriver.com/forum & www.tirerack.com for tire reviews and comments!
Most BMW M3 drivers prefer Dunlop Wintersport M3/3Ds (3D is the new version of the M3) which are arguably better than the dealer-recommended Michelin Pilot Alpin PA2.
Nokians are good, too, but not as extensively discussed on the BMW/Porsche performance car enthusiast forums as the above 2.
however you dont see too many bmw m3's or porsche's being winter drivin.
| quote: |
| Originally posted by bgkotze however you dont see too many bmw m3's or porsche's being winter drivin. |
Think im going towards getting the X-Ices...
My Yaris is going to just LOVE the snow 
(... well, more than she does now anyways 
)
Why in the heck did I read through this whole thread hoping to find something interesting when I don't even own a car anymore and really could care less about the topic.
I must be losing my damn mind...
its about time, winter tires will now be mandatory in quebec.
| quote: |
| Originally posted by Blizwar2 Why in the heck did I read through this whole thread hoping to find something interesting when I don't even own a car anymore and really could care less about the topic. I must be losing my damn mind... |
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